Question

我有一个使用MEAN堆栈的项目，在Mongo DB集合中，我有一个叫做“服务”的集合。使用以下行（一个小子集）：

{ "_id" : ObjectId("55af611de2be6d817d000001"), "client" : "55a8e5fa586f94752a000002", "collaborators" : null, "date" : ISODate("2015-07-22T09:23:41.917Z"), "latestUpdateDate" : ISODate("2015-07-22T09:23:41.917Z"), "backofficeRequested" : false, "description" : "Uma descrição qq", "wasSeen" : 0, "currentStatusId" : "0", "lastStatusId" : 4, "__v" : 2, "addresses" : [ ], "dates" : [ ], "estimateDuration" : 61, "estimatePrice" : "55", "notes" : [ ], "serviceDate" : ISODate("2015-07-23T10:07:00Z"), "totalPrice" : "600", "serviceInvoiced" : "No", "evaluation" : "", "positiveFeatures" : "", "negativeFeatures" : "" }
{ "_id" : ObjectId("55afa8662c1e98c80d2fd2ff"), "client" : "55a8e5fa586f94752a000002", "estimatePrice" : "12", "estimateDuration" : NumberLong(720), "description" : "12", "serviceDate" : ISODate("1212-12-12T12:48:45Z"), "lastStatusId" : null, "currentStatusId" : "0", "collaborators" : [ { "id" : "55acb6022c1e98d05f2fd2ff" } ], "dates" : [ ], "totalPrice" : "", "backofficeRequested" : NumberLong(0), "serviceInvoiced" : "No", "evaluation" : "", "positiveFeatures" : "", "negativeFeatures" : "" }
{ "_id" : ObjectId("55afa9f62c1e98370e2fd2ff"), "client" : "55ae68d82c1e98ac782fd303", "estimatePrice" : "12", "estimateDuration" : NumberLong(720), "description" : "12", "serviceDate" : ISODate("1212-12-12T12:48:45Z"), "lastStatusId" : null, "currentStatusId" : "1", "collaborators" : [ { "id" : "55acb6022c1e98d05f2fd2ff" } ], "dates" : [ ], "totalPrice" : "500", "backofficeRequested" : NumberLong(0), "serviceInvoiced" : "No", "evaluation" : "", "positiveFeatures" : "", "negativeFeatures" : "" }
{ "_id" : ObjectId("55afaa7e2c1e98bc0d2fd2ff"), "client" : "55a8e5fa586f94752a000002", "estimatePrice" : "12", "estimateDuration" : NumberLong(720), "description" : "12", "serviceDate" : ISODate("1212-12-12T12:48:45Z"), "lastStatusId" : null, "currentStatusId" : "0", "collaborators" : [ { "id" : "55acb6022c1e98d05f2fd2ff" } ], "dates" : [ ], "totalPrice" : "", "backofficeRequested" : NumberLong(0), "serviceInvoiced" : "No", "evaluation" : "", "positiveFeatures" : "", "negativeFeatures" : "" }
{ "_id" : ObjectId("55afaf582c1e98d80d2fd303"), "client" : "55ae68d82c1e98ac782fd303", "estimatePrice" : "1", "estimateDuration" : NumberLong(60), "description" : "1", "serviceDate" : ISODate("1111-11-11T11:47:45Z"), "lastStatusId" : null, "currentStatusId" : "4", "collaborators" : [ { "id" : "55ae40772c1e98007a2fd2ff" } ], "dates" : [ ], "totalPrice" : "", "backofficeRequested" : NumberLong(0), "serviceInvoiced" : "No", "evaluation" : "", "positiveFeatures" : "", "negativeFeatures" : "" }
{ "_id" : ObjectId("55afb8472c1e98370e2fd300"), "client" : "55a8e5fa586f94752a000002", "estimatePrice" : "1", "estimateDuration" : NumberLong(60), "description" : "1", "serviceDate" : ISODate("1111-11-11T11:47:45Z"), "lastStatusId" : null, "currentStatusId" : NumberLong(2), "collaborators" : [ { "id" : "55ae40772c1e98007a2fd2ff" } ], "dates" : [ ], "totalPrice" : "", "backofficeRequested" : NumberLong(0), "serviceInvoiced" : "No", "evaluation" : "", "positiveFeatures" : "", "negativeFeatures" : "" }
{ "_id" : ObjectId("55aff2dc2c1e98ac112fd2ff"), "client" : "55a8e5fa586f94752a000002", "estimatePrice" : "1", "estimateDuration" : NumberLong(720), "description" : "1", "serviceDate" : ISODate("1989-12-12T12:12:00Z"), "lastStatusId" : null, "currentStatusId" : NumberLong(2), "collaborators" : [ { "id" : "55ae40772c1e98007a2fd2ff" } ], "dates" : [ ], "totalPrice" : "", "backofficeRequested" : NumberLong(0), "serviceInvoiced" : "No", "evaluation" : "", "positiveFeatures" : "", "negativeFeatures" : "" }

我希望使用ID＆＃34; 55a8e5fa586f94752a000002＆＃34;获取属于客户端的所有行。

在mongo Shell中很容易做到：

db.services.find({"client":"55a8e5fa586f94752a000002"})

但我在Node.js中遇到困难，因为它根本不返回任何服务，或者它最终只返回一个服务。

这就是我现在正在使用的内容：

(...)

console.log(checkDatas[0]._id);
Service.find().where('client', checkDatas[0]._id)
.exec(function(err, services)
{
    console.log("output: " + services);

(...)

最后，这是输出：

**55a8e5fa586f94752a000002**

**output**: { _id: 55aff719af19b58913000001,
  client: 55a8e5fa586f94752a000002,
  __v: 1,
  collaborators: [ { id: '55acb6022c1e98d05f2fd2ff' } ],
  notes: [],
  dates: [],
  addresses: [],
  date: Wed Jul 22 2015 22:03:37 GMT+0200 (CEST),
  latestUpdateDate: Wed Jul 22 2015 22:03:37 GMT+0200 (CEST),
  backofficeRequested: false,
  totalPrice: null,
  estimatePrice: null,
  estimateDuration: null,
  description: '',
  serviceDate: null,
  wasSeen: 0,
  currentStatusId: 3,
  lastStatusId: 1 }

好像我使用的是findOne，但我不是。

最重要的是，昨天我在该查询中也有一个.sort（）方法，在评论之后一切正常，但今天问题又回来了。

MongoDB / Node是否有某种我不知道的缓存系统？

由于

修改：

正在运行

Service.find({'client': checkDatas[0]._id})

产生相同的结果

Answer 1

看起来你正在混合ObjectId和字符串，这是两个不同的东西。

您的Mongoose查询正在寻找ObjectId：

Service.find().where('client', checkDatas[0]._id)

快速提示：您可以在输出中区分这两种类型：

// ObjectId, because it doesn't have quotes around it
client: 55a8e5fa586f94752a000002
// String
collaborators: [ { id: '55acb6022c1e98d05f2fd2ff' } ]

您的MongoDB shell查询正在查找字符串：

db.services.find({"client":"55a8e5fa586f94752a000002"})

您发布的子集仅显示字符串，但我认为您的数据库实际上可能包含这两种类型。您可以查看这是否更好：

Service.find().or([
  { client : checkDatas[0]._id },
  { client : String(checkDatas[0]._id) }
])...

显然这不太理想，如果两种类型混合，你应该考虑规范化数据库。

编辑：or查询在使用Mongoose时可能无效，因为它会将两个子句都转换为模式中定义的类型。你仍然可以从Mongo shell中查看：

db.services.find({ $or : [
 { client : "55a8e5fa586f94752a000002" },
 { client : ObjectId("55a8e5fa586f94752a000002") }
]})

MongoDB无法获取所有行

1 个答案: